Anthracene compounds and making same.



STATES PATENT @FFICE.

MAX HENRY ISLER, OF MANNHEIM, GERMANY, ASSIGNOR '10 BADISCHE ANILIN & SODA FABRIK, OF LUDWIGSI'IAFEN-O1\T-THE-RHIINE, GERMANY, A CORPORATION.

ANTHRACENE COMPOUNDS AND MAKING SAME.

i.,oo1,aos.

No Drawing.

To all whom it may concern:

Be it known that I, MAX llnNnY lsnnn, chemist, citizen of the Swiss Republic, residing at Mannheim, Germany, have invented new and useful Improvements in Anthraeene Compounds and Making the hame, of which the following is a specification.

I have found that bcnzoyl-amino-orthohalogen anthraquinone and derivatives thereof can be caused to undergo condensation, whereby a new ring is formed, and compounds are produced which can apparently be regarded as phenantln'idons of the anthraquinone series. The condensation is preferably carried out by means of a condensation agent, and the products can be employed as coloringmatters or in the production of coloring matters.

The following examples will serve to illustrate further the nature of my invention, which, however, is not confined to these examples. The parts are by weight.

Example 1: Boil together for a few hours fifty parts of l-benzoyl-amino-2-brom-anthraquinone, fifty parts of naphthalene and ten parts of calcined soda, and then remove the naphthalene by means of toluol or alcohol. The residue can be purified by recrystallization from ortl1o-dicl1lor-benzeue, and melts at about from two hundred and sixty-six to two hundred and sixty-seven degrees Centigrade. Analysis points to the condensation product possessing the formula It yields a yellow solution in concentratedsulfurie acid, but it is diflicultly soluble in the ordinary solvents. v

Specification of Letters Patent.

Application filed May 20, 1911.

Patented Aug. 22, 1911.

Serial No. 628,527.

to five hours, fifty parts of 1-chlor-2bem zoyl-amino-anthraquinone, thirty parts of nitro-benzcne and twenty parts of calcined soda or anhydrous sodium acetate, and then work up the mixture as described in the foregoing Example 1. Analysis points to the product possessing a constitution represented by the formu a CO a l to RA /U lVhen pure, the product melts at from two hundred and seventy-four to two hundred and seventy-five degrees centigrade.

In a similar manner, a condensation prod not can be obtained from Q-benzoylamino-3- halogen-anthraquinone.

Example 4: Boil to other, for a few hours, twenty-three parts of 1.5-dichlor-2.6-dibcnzoyl-diamino-anthraquinone (obtainable by boiling 1.5 dichlor 2.6 diamino-anthraquinone with benz o'yl chlorid in, one hundred and forty parts of naphthalene, nine parts of calcined soda, and seven parts of finely divided copper powder. ork up the prod net in the manner described in the't'ore going Example 1, and re-crystallize the product from nitrobenzene. The pure product does not melt below three hundred and twenty degrees centigrade. Analysis points to its possessing a constitution represented by the formula It dyes cotton from a vat yellow. In a similar manner condensation products can be obtained from other ort-ho-benzoyl-amino-halogen-anthraquinones; for inand the product described in the foregoing stance from 13.5.7-tetrabrom-2.6-dibenzoyldiamino-anthraquinone.

Example 5; Boil together, for a few hours, v

fifty parts of ortho-chlor-benzoyl-aminoortho-chlor-anthraquinone (obtainable by heating ortho-chl0r-benzoyl chlorid with 1- chlor-2-amino-anthraquinone), fifty parts of naphthalene and ten .parts .of calcined soda, and work up the mixture in the manner described in the foregoing Example 1. The product, when pure, melts at from two hundred and seventy-eight to two hundred and eighty degrees centigrade, and analysis points to its possessing a constitution repre- C sented by the formula Example 3 is produced.

Now whatI claim is 1. The process of producing new products of the anth-racene series by treating a ben-. zoyl aminoortho halogen anthraquinone body with a condensation agent.

2..The process of producing a new compound of the anthracene series by. treating 1.5 dichlor 2.6 dibenzoyl-diamino-anthraquinone with a condensing agent.

-3.-As new articles of manufacture the new compounds being phenanthridons of Jthe anthraquinone series which can be ob-,

tained by treating a benzoyl-amino-orthohalogen-anthraquinone body with a conden-.

sation agent, which new compounds yield yellow solutions in concentrated sulfuric acid, possess high melting points, and are difiicultly soluble in the ordinary solvents.

'4. As a new article of manufacture the compound obtainable by treating 1.5-dichlor- 2.6-dibenzoyl-diamino-anthraquinone with a condensing agent, which compound possesses a constitution corresponding to the formula which consists, when dry, of a yellow powder, yields a yellow-solution in concentrated sulfuric acid, is diflicultly soluble in the or-' -dinai'y solvents, and dyes cotton from a. vat

yellow shades.

In testimony whereof I have hereunto set my hand in the presence of two subscribing w tnesses. a I

MAX ununrrstnn.

Witnesses J. ALEC. LLOYD,

A. O. TITTMANN. 

